Rechecking in maths(0580)

I have my exams in the next week and I am a bit worried about maths.

Overall I am pretty good at maths I usually score above average but what really drops my grades are my silly mistakes.

I already know a few ways to recheck my answers but some errors still go unnoticed and cost me a lot of marks

Do you guys know any rechecking methods or tips to identify errors if so please do share, if you all want some of my methods of rechecking just let me know I'll make another post about it

Here's the post about my rechecking method